Title from title screen (viewed Feb. 29, 2016). Also available online in PDF format from the U.S. Geological Survey Warehouse (http:/pubs.er.usgs.gov/). Depths shown by isolines and soundings. Sheet 1 includes text, bibliography, 2 graphs, and location maps. Sheet 2 includes 8 bathymetric sections and 2 location maps. "Prepared in cooperation with Idaho Department of Health and Welfare, Division of Environmental Quality."